Last change
on this file since 557 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
1.2 KB
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Line | |
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1 | /* cmb-outbyte.c -- outbyte function for CMB1200 eval board. |
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2 | * |
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3 | * Copyright (c) 1999 Cygnus Support |
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4 | * |
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5 | * The authors hereby grant permission to use, copy, modify, distribute, |
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6 | * and license this software and its documentation for any purpose, provided |
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7 | * that existing copyright notices are retained in all copies and that this |
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8 | * notice is included verbatim in any distributions. No written agreement, |
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9 | * license, or royalty fee is required for any of the authorized uses. |
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10 | * Modifications to this software may be copyrighted by their authors |
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11 | * and need not follow the licensing terms described here, provided that |
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12 | * the new terms are clearly indicated on the first page of each file where |
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13 | * they apply. |
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14 | */ |
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15 | #include <_ansi.h> |
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16 | |
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17 | #define _TX 0x40 |
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18 | #define _SR 0x86 |
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19 | |
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20 | #define UART0_BASE 0x10009000 |
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21 | #define UART1_BASE 0x1000a000 |
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22 | |
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23 | #define UART_BASE UART0_BASE |
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24 | |
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25 | #define TXREG ((volatile unsigned short *)(UART_BASE + _TX)) |
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26 | #define SRREG ((volatile unsigned short *)(UART_BASE + _SR)) |
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27 | |
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28 | #define TRDY 0x2000 |
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29 | |
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30 | #define GDB_QUOTE_CHAR 15 /* ^O */ |
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31 | |
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32 | /* |
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33 | * outbyte -- send a byte to the UART. |
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34 | */ |
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35 | void |
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36 | outbyte (char ch) |
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37 | { |
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38 | while (!(*SRREG & TRDY)) |
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39 | ; |
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40 | *TXREG = GDB_QUOTE_CHAR; |
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41 | |
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42 | while (!(*SRREG & TRDY)) |
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43 | ; |
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44 | *TXREG = (unsigned short)ch; |
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45 | } |
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